1. All of the members of a particular species that live in one area are called a(an)
a) biome.
b) population.
c) community.
d) ecosystem.
2. Green plants are
a) producers.
b) consumers.
c) herbivores.
d) omnivores.
3. Which of the following organisms does NOT require sunlight to live?
a) chemosynthetic bacteria
b) algae
c) trees
d) photosynthetic bacteria
4. An organism that cannot make its own food is called a(an)
a) heterotroph.
b) chemotroph.
c) autotroph.
d) producer.
5. A snake that eats a frog that has eaten an insect that fed on a plant is a
a) first-level producer.
b) first-level consumer.
c) second-level producer.
d) third-level consumer.
6. Carbon cycles through the biosphere in all of the following processes EXCEPT
a) photosynthesis.
b) transpiration.
c) burning of fossil fuels.
d) decomposition of plants and animals.
7. How is carbon stored in the biosphere?
a) in the atmosphere as carbon dioxide
b) underground as fossil fuels and calcium carbonate rock
c) in the oceans as dissolved carbon dioxide
d) all of the above
8. Nitrogen fixation is carried out primarily by
a) humans.
b) plants.
c) bacteria.
d) consumers.
9. Each of the following is an abiotic factor in the environment EXCEPT
A) plant life.
B) soil type.
C) rainfall.
D) temperature.
10. Primary succession can begin after
A) a forest fire.
B) a lava flow.
C) farm land is abandoned.
D) a severe storm.
11. What is one difference between primary and secondary succession?
A) Primary succession is slow and secondary succession is rapid.
B) Secondary succession begins on soil and primary succession begins on newly exposed surfaces.
C) Primary succession modifies the environment and secondary succession does not.
D) Secondary succession begins with lichens and primary succession begins with trees.
12. Which is a factor that could interrupt the progress of succession?
A) colonization of surfaces by lichens
B) different animals appearing at each stage
C) another natural disturbance
D) long-term fluctuations in climate
13. As PCBs moves up the trophic levels in food chains, or food webs, its concentration
A) stays the same.
B) increases.
C) decreases.
D) is eliminated.
14. Carbon dioxide is released into the atmosphere by all of the following EXCEPT the
A) burning of fossil fuels.
B) depletion of the ozone layer.
C) burning of trees and forests.
D) none of the above
15. Describe the cycling of nutrients in either the nitrogen or carbon cycle.
16. Describe how the overuse of a natural resource such as fishing affects the ecosystem. What does it do to biodiversity? How does it affect humans?
17. Create one food chain from this food web. Include at least 4 organisms!
18. How might a large omnivore change the flow of energy in Figure 3-5, Diagram II?
19. How many Kilocalories (Kcal) can the top carnivore in Figure 3-5, Diagram I store? Explain.
20. According to figure 3-5, what are the secondary consumers in diagram I?
21. How many grams per square meter of biomass are in trophic level 2 of diagram II?
22. What are the tertiary consumers in diagram II ?
23. What is the job of the decomposer?
A) eat plants B) break down waste C) tear up foods D) eat meat
24. Which statement is true about food chains?
A) the arrow shows which animals are herbivores B) all food chains start with consumers C) the arrow show which animal eat meat D) the arrow shows the movement of energy
25. Using the food web below, create a trophic pyramid that includes all trophic levels and organisms from the food web.
Date:_
Ecology Unit Exam
1. All of the members of a particular species that live in one area are called a(an)
a) biome.
b) population.
c) community.
d) ecosystem.
2. Green plants are
a) producers.
b) consumers.
c) herbivores.
d) omnivores.
3. Which of the following organisms does NOT require sunlight to live?
a) chemosynthetic bacteria
b) algae
c) trees
d) photosynthetic bacteria
4. An organism that cannot make its own food is called a(an)
a) heterotroph.
b) chemotroph.
c) autotroph.
d) producer.
5. A snake that eats a frog that has eaten an insect that fed on a plant is a
a) first-level producer.
b) first-level consumer.
c) second-level producer.
d) third-level consumer.
6. Carbon cycles through the biosphere in all of the following processes EXCEPT
a) photosynthesis.
b) transpiration.
c) burning of fossil fuels.
d) decomposition of plants and animals.
7. How is carbon stored in the biosphere?
a) in the atmosphere as carbon dioxide
b) underground as fossil fuels and calcium carbonate rock
c) in the oceans as dissolved carbon dioxide
d) all of the above
8. Nitrogen fixation is carried out primarily by
a) humans.
b) plants.
c) bacteria.
d) consumers.
9. Each of the following is an abiotic factor in the environment EXCEPT
A) plant life.
B) soil type.
C) rainfall.
D) temperature.
10. Primary succession can begin after
A) a forest fire.
B) a lava flow.
C) farm land is abandoned.
D) a severe storm.
11. What is one difference between primary and secondary succession?
A) Primary succession is slow and secondary succession is rapid.
B) Secondary succession begins on soil and primary succession begins on newly exposed surfaces.
C) Primary succession modifies the environment and secondary succession does not.
D) Secondary succession begins with lichens and primary succession begins with trees.
12. Which is a factor that could interrupt the progress of succession?
A) colonization of surfaces by lichens
B) different animals appearing at each stage
C) another natural disturbance
D) long-term fluctuations in climate
13. As PCBs moves up the trophic levels in food chains, or food webs, its concentration
A) stays the same.
B) increases.
C) decreases.
D) is eliminated.
14. Carbon dioxide is released into the atmosphere by all of the following EXCEPT the
A) burning of fossil fuels.
B) depletion of the ozone layer.
C) burning of trees and forests.
D) none of the above
15. Describe the cycling of nutrients in either the nitrogen or carbon cycle.
16. Describe how the overuse of a natural resource such as fishing affects the ecosystem. What does it do to biodiversity? How does it affect humans?
18. How might a large omnivore change the flow of energy in Figure 3-5, Diagram II?
19. How many Kilocalories (Kcal) can the top carnivore in Figure 3-5, Diagram I store? Explain.
20. According to figure 3-5, what are the secondary consumers in diagram I?
21. How many grams per square meter of biomass are in trophic level 2 of diagram II?
22. What are the tertiary consumers in diagram II ?
23. What is the job of the decomposer?
A) eat plants
B) break down waste
C) tear up foods
D) eat meat
24. Which statement is true about food chains?
A) the arrow shows which animals are herbivores
B) all food chains start with consumers
C) the arrow show which animal eat meat
D) the arrow shows the movement of energy
25. Using the food web below, create a trophic pyramid that includes all trophic levels and organisms from the food web.